Icom IC-M504

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TABLE OF CONTENTS
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2
3
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7
8
9
10
11
12
13
14
15
16
FOREWORD ..................................................................................... i
IMPORTANT ...................................................................................... i
EXPLICIT DEFINITIONS ................................................................... i
IN CASE OF EMERGENCY ............................................................. ii
NOTE ................................................................................................ ii
RADIO OPERATOR WARNING ...................................................... iii
TABLE OF CONTENTS ................................................................... iv
PRECAUTIONS ................................................................................ v
1 OPERATING RULES ..................................................................1
2 PANEL DESCRIPTION ...........................................................2−5
 ■ Front panel ...............................................................................2
 ■ Function display .......................................................................4
 ■ Microphone ..............................................................................5
3 BASIC OPERATION .............................................................6−11
 ■ Channel selection.....................................................................6
 ■ Receiving and transmitting .......................................................8
 ■ Call channel programming .......................................................9
 ■ Channel comments ................................................................10
 ■ Microphone Lock function ......................................................10
 ■ Display backlight ....................................................................10
 ■ Optional voice scrambler operation ........................................11
4 SCAN OPERATION ............................................................12−13
 ■ Scan types .............................................................................12
 ■ Setting TAG channels ............................................................13
 ■ Starting a scan .......................................................................13
5 DUALWATCH/TRI-WATCH .......................................................14
 ■ Description .............................................................................14
 ■ Operation ...............................................................................14
6 DSC OPERATION ...............................................................15−49
 ■ MMSI code programming ......................................................15
 ■ MMSI code check ..................................................................16
 ■ DSC address ID .....................................................................17
 ■
Position and time programming ........................................................ 21
 ■ Position and time indication ...................................................22
 ■ GPS information indication ....................................................22
 ■ Distress call ...........................................................................23
 ■ Transmitting DSC calls ...........................................................26
 ■ Receiving DSC calls ..............................................................41
 ■ Received messages ..............................................................45
 ■ DSC Set mode .......................................................................47
7 OTHER FUNCTIONS ..........................................................50−54
 ■ Intercom operation .................................................................50
 ■ RX Speaker function ..............................................................51
 ■ Hailer operation .....................................................................52
 ■ Automatic foghorn function ....................................................53
8 SET MODE ..........................................................................55−57
 ■ Set mode programming .........................................................55
 ■ Set mode items ......................................................................55
9 CONNECTIONS AND MAINTENANCE..............................58−66
 ■ Connections ...........................................................................58
 ■ Fuse replacement ..................................................................59
 ■ Supplied accessories .............................................................59
 ■ Antenna .................................................................................59
 ■ Mounting the transceiver .......................................................60
 ■ MB-75 installation ..................................................................61
 ■ UT-112 installation .................................................................62
 ■ HM-162/HM-157 installation ..................................................63
10 TROUBLESHOOTING .............................................................. 67
11 SPECIFICATIONS AND OPTIONS .....................................68−69
 ■ Specifications.........................................................................68
 ■ Options ..................................................................................69
12 CHANNEL LIST ........................................................................70
13 TEMPLATE ...............................................................................71
14 FCC INFORMATION .................................................................73